Abstract
背景与目的非小细胞肺癌(non-small cell lung cancer, NSCLC)是当今世界上发病率和死亡率最高的恶性肿瘤之一,而表皮生长因子受体-酪氨酸激酶抑制剂(epidermal growth factor receptor-tyrosine kinase inhibitors, EGFR-TKI)整体有效率为30%-40%,无进展生存期(progression-free survival, PFS)为12个月。但EGFR-TKI在临床中的耐药现象也很普遍,严重影响了其抑瘤作用。因此,克服耐药、寻找一种新的与肺癌耐药相关的预后因子势在必行。本研究旨在通过体内外实验探讨DNA结合抑制因子1(differentiation inhibitory factor 1, ID1)与NSCLCEGFR-TKI耐药之间的关系,看其是否有统计学意义,并初步探讨其机制。方法免疫组化(immunohistochemistry, IHC)检测手术标本(肺癌组织和癌旁组织)1D1的表达;qRT-PCR、Western-blot检测并比较肺癌细胞敏感株与耐药株中ID1的表达变化;MTT检测吉非替尼对ID1慢病毒载体处理肺癌细胞的细胞增殖情况,将肺癌细胞接种至裸鼠腋下,待肿瘤生长至一定体积使用吉非替尼治疗,估算肿瘤体积。结果ID1在肺癌组织中的表达明显高于正常组织(P < 0.05);ID1的表达与NSCLC EGFR-TKI耐药呈正相关(P < 0.05)。结论ID1在NSCLC中高表达,并且参与了NSCLC EGFR-TKI的耐药,其机制可能与STAT3磷酸化程度增加有关。
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.